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CA Valve dribble

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CA Valve dribble Empty CA Valve dribble

Post  jake52 Fri Aug 26, 2011 7:46 am

Hi,

Is it normal for the CA valve to dribble occasionally? I've found that after turning the mains water supply off and back on I do get a small dribble from the valve into the tundish. The valve can release a little more water for a few days, never continually running.

jake52

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Join date : 2010-06-24

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Post  Mike the Boilerman Sun Sep 04, 2011 2:09 am

It's not unusual but neither is it correct. I wouldn't do anything about it unless the dribbling becomes continuous though.

HTH,
Mike

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Mike Bryant AKA Mike the Boilerman, Gledhill repair specialist, webmaster of www.gledhill-repairs.co.uk & www.miketheboilerman.com. For information about my Gledhill repair service or to make a booking call me on 07866 766364. (Please don't phone me for advice if you are fixing a Gledhill yourself, ask on here instead - I run this forum partly to cut down on the phone calls!)

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Post  jake52 Mon Sep 05, 2011 8:02 am

Thanks Mike

jake52

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Post  Southampton Technician Mon Sep 05, 2011 2:34 pm

Hi,
Could it be that the expansion tank has no air pressure? allowing shock waves in the water supply to lift the safety valve for a moment.
To check, release system pressure to zero and measure air presure of vessel with tyre pressure gauge. Pressure should be the same as initial charge pressure i.e. 1 bar.

Southampton Technician

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